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Analog Devices Inc. LTC2401IMS#TRPBF
- Part No.:
- LTC2401IMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2401IMS#TRPBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
LTC2401IMS#TRPBF from Analog Devices (formerly Linear Technology) is a 1-channel, 24-bit micropower delta-sigma ADC in MSOP-10 package, featuring no-latency digital filtering, 4ppm INL, 0.6ppm RMS noise, and single-cycle settling for multiplexed sensor interfaces. It operates from 2.7V to 5.5V, supports pseudo-differential bridge digitization, and is optimized for high-precision weight scales and direct temperature measurement.
For engineers reviewing the LTC2401IMS#TRPBF datasheet, LTC2401IMS#TRPBF pinout, LTC2401IMS#TRPBF application, or LTC2401IMS#TRPBF equivalent, key selection criteria include its 110dB 50/60Hz notch rejection, extended input range (–12.5% to +112.5% VREF), internal oscillator eliminating external timing components, and SPI/MICROWIRE-compatible 3-wire interface with zero-latency output.
Technical Context
The LTC2401IMS#TRPBF employs a proprietary decimating FIR filter architecture that settles in one conversion cycle-eliminating latency inherent in conventional ∆Σ converters. Its digital filter nulls at 50Hz or 60Hz ±2% when FO is tied to VCC or GND, or at fEOSC/2560 with external clock (1Hz–120Hz).
It integrates continuous auto-calibration of offset and full-scale every conversion, enabling stable performance over temperature (±0.01 ppm/°C offset drift) and supply variation. Input range extends from ZSSET – 0.12VREF to FSSET + 0.12VREF, where VREF = FSSET – ZSSET, supporting live-zero and overrange tolerance in strain gauge and transducer front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full dynamic range utilization in precision instrumentation. |
| INL | 4 ppm of VREF max-enables <0.0001% linearity error in 2.5V reference systems, critical for metrology-grade weight scales. |
| RMS Noise | 0.6 ppm of VREF-translates to ~1.5 µVRMS at 2.5V reference, supporting sub-microvolt signal resolution. |
| Normal Mode Rejection | ≥110 dB at 50Hz/60Hz ±2%-rejects mains interference without external analog filtering in industrial environments. |
| Supply Current | 200 µA in conversion mode, 20 µA in sleep-enables battery-powered portable instruments with multi-year operation. |
| Input Range | –12.5% to +112.5% of VREF-accommodates sensor offset, amplifier gain error, and overrange without clipping. |
| Reference Range | 0.1 V to VCC-supports low-voltage references (e.g., 1.25V bandgap) while maintaining 24-bit integrity. |
Pinout & Package
Package: 10-lead plastic MSOP (MS10), 3 mm × 3 mm × 1.1 mm, exposed pad not connected. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | 2.7V–5.5V operation; requires local 10µF tantalum + 0.1µF ceramic bypass to GND for noise immunity. |
| FSSET (Pin 2) | Full-scale reference input | Sets upper end of conversion range; defines VREF together with ZSSET (VREF = FSSET – ZSSET). |
| CH0 (Pin 3) | Analog input channel 0 | Pseudo-differential input; accepts signals from –0.125VREF to +1.125VREF; NC on LTC2402. |
| CH1 (Pin 4) | Analog input channel 1 | Not present on LTC2401IMS#TRPBF-pin is No Connect per datasheet Figure 1 top view. |
| ZSSET (Pin 5) | Zero-scale reference input | Sets lower end of conversion range; enables live-zero calibration for offset compensation. |
| GND (Pin 6) | Common ground | Single-point analog/digital/reference ground connection; must tie directly to ground plane. |
| CS (Pin 7) | Chip select input | Active-low enable; controls wake-up from sleep, data output enable, and conversion restart. |
| SDO (Pin 8) | Serial data output | 3-state output; delivers 32-bit frame (4 status + 24 result + 4 sub-LSBs); EOC bit available during sleep. |
| SCK (Pin 9) | Bidirectional serial clock | Auto-configures as output (internal clock mode) or input (external clock mode) based on power-up state. |
| FO (Pin 10) | Frequency control input | Selects 50Hz (FO = VCC), 60Hz (FO = GND), or user-defined notch (FO = external clock 2.56–307.2 kHz). |
Key Features
| Feature | Design Value |
|---|---|
| No-latency ∆Σ architecture | Single-cycle filter settling eliminates dead time between conversions-enables true real-time multiplexing of multiple sensors. |
| Integrated oscillator | Eliminates external crystal/capacitor; provides precise 50/60Hz rejection without component count or layout sensitivity. |
| Extended input range | –12.5% to +112.5% VREF accommodates amplifier offset, sensor zero-shift, and transient overvoltage without saturation. |
| Per-conversion auto-calibration | Continuous offset and full-scale correction ensures stability over temperature (±0.01 ppm/°C) and supply drift (100 dB PSR). |
| SPI/MICROWIRE-compatible interface | 3-wire protocol with CS/SCK/SDO supports direct MCU connection without level shifters or glue logic. |
Applications
| Weight Scales | Direct Temperature Measurement |
|---|---|
|
Use Scenario: High-resolution load cell readout in platform scales and laboratory balances requiring 100,000+ counts resolution. IC Role / Device Role / Timing Role: Pseudo-differential bridge digitizer with live-zero support, converting mV-level Wheatstone bridge outputs with 24-bit resolution. Use Value: 4ppm INL and 0.6ppm noise enable sub-gram repeatability at 10 kg full scale using standard 2 mV/V load cells. |
Use Scenario: RTD or thermistor-based temperature sensing in HVAC controllers and medical thermometers. IC Role / Device Role / Timing Role: Precision ratiometric ADC accepting excitation current-derived voltage with integrated reference scaling. Use Value: Extended input range handles RTD self-heating offsets and lead-wire resistance errors without external op-amp compensation. |
| Gas Analyzers | Strain Gauge Transducers |
|
Use Scenario: Electrochemical gas sensor signal conditioning in portable air quality monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC digitizing picoamp-level sensor currents via precision transimpedance amplifier. Use Value: 110dB 50/60Hz rejection suppresses ambient EMI in unshielded handheld enclosures without analog notch filters. |
Use Scenario: Structural health monitoring using bonded foil strain gauges on bridges or aircraft components. IC Role / Device Role / Timing Role: High-stability bridge digitizer with per-conversion calibration compensating for thermal EMF and long-term drift. Use Value: 0.01 ppm/°C offset drift ensures <1 µε measurement stability over –40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 24-bit, 4kSPS, integrated PGA and burn-out current sources; requires external reference; no internal oscillator. | Better suited for multi-sensor systems needing programmable gain and sensor diagnostics. | Select ADS124S08IPW when PGA flexibility and sensor excitation features outweigh need for oscillator integration. |
| MAX11206ETL+ | 24-bit, 10SPS, internal oscillator, but only 105dB 50/60Hz rejection; higher 1.2ppm RMS noise. | Acceptable for cost-sensitive industrial sensors where 5dB rejection margin and 2× noise are tolerable. | Choose MAX11206ETL+ only if board space and BOM count constraints override precision requirements. |
Compared with ADS124S08IPW and MAX11206ETL+, the LTC2401IMS#TRPBF delivers superior 110dB line-frequency rejection and lower 0.6ppm noise-making it optimal for metrology-grade applications where absolute accuracy and mains immunity are non-negotiable.
Availability
LTC2401IMS#TRPBF is available at Aetrix Electronics and suitable for weight scales, direct temperature measurement, gas analyzers, and strain gauge transducers requiring stable component supply, long-term calibration integrity, and industrial temperature range (–40°C to +85°C) operation.
Supply support for LTC2401IMS#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its precision analog portfolio, emphasizing high-performance signal chain solutions for industrial, instrumentation, and medical markets.
The LTC2401IMS#TRPBF belongs to Linear's µPower No-Latency ∆Σ ADC family, designed specifically for high-accuracy, low-power sensor digitization in space- and energy-constrained applications where traditional oversampling ADCs introduce unacceptable latency.
FAQ
What is the operating temperature range for the LTC2401IMS#TRPBF?
The LTC2401IMS#TRPBF is specified for operation from –40°C to +85°C (Industrial grade). This range is confirmed in the "Operating Temperature Range" section of the datasheet, and the MSOP-10 package is qualified for this full range with guaranteed performance including 4ppm INL and 110dB 50/60Hz rejection across temperature.
Does the LTC2401IMS#TRPBF require external passive components for its internal oscillator?
No, the LTC2401IMS#TRPBF does not require any external passive components for its internal oscillator. As stated in the Features list and Functional Description, the internal oscillator needs "no external frequency setting components," enabling immediate 50Hz or 60Hz notch filtering upon connecting FO to VCC or GND-no crystals, capacitors, or resistors are needed.
How does the extended input range of the LTC2401IMS#TRPBF improve system design?
The LTC2401IMS#TRPBF supports an input range of –12.5% to +112.5% of VREF, which allows accommodation of sensor offset, amplifier gain error, and transient overvoltage without clipping. This "live zero" capability eliminates the need for external level-shifting circuitry in strain gauge and RTD interfaces, reducing component count and improving long-term stability.
Can the LTC2401IMS#TRPBF interface directly with a microcontroller SPI port?
Yes, the LTC2401IMS#TRPBF communicates via a 3-wire digital interface compatible with SPI and MICROWIRE protocols. Its CS/SCK/SDO pins operate at standard CMOS levels (VIH ≥ 2.5V, VIL ≤ 0.8V for VCC = 5.5V), allowing direct connection to most MCU SPI peripherals without level translation or additional logic.
What is the conversion time of the LTC2401IMS#TRPBF under standard 60Hz rejection configuration?
With FO tied to GND for 60Hz rejection, the LTC2401IMS#TRPBF has a typical conversion time of 157.03 ms (min 157.03 ms, max 163.44 ms). This value is explicitly listed in the "CONVERSION TIME" row of the Electrical Characteristics table under "FO = VCC" condition-note that FO = GND corresponds to 60Hz mode and uses the same timing specification per datasheet Note 8.
LTC2401IMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 7.5
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2401IMS#TRPBF FAQ
1.How can I place an order for LTC2401IMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2401IMS#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC2401IMS#TRPBF reliable?
The price and inventory of LTC2401IMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2401IMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2401IMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2401IMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2401IMS#TRPBF?
LTC2401IMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2401IMS#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC2401IMS#TRPBF?
For technical support, including LTC2401IMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2401IMS#TRPBF requirements.
6.How does Aetrix verify that LTC2401IMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2401IMS#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC2401IMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2401IMS#TRPBF?
All LTC2401IMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2401IMS#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC2401IMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2401IMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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